Electrically operated window



July 4, 1933. MQSHER 1,916,579

ELECTRICALLY OPERATED WINDOW Filed March 5, 1932 2 Sheets-Sheet l 4,1933. E. MQSHER 1,916,579

ELECTRICALLY OPERATED WINDOW Filed March 5, 1932 2 Sheets-Sheet 2 5 527Mafia? Patented July 4, 1933 UNITED STATES PATENT OFFICE EVERT KOSHER,OF EADS, COLORADO, ASSIGNOR OF ONE-FOURTH TO JAMES G. HOPKINS, OF EJLDS,COLORADO ELECTRICALLY OPERATED WIlTDOW Application filed March 5, 1932.Serial No. 597,023.

This invention relates to a device for opening and closing windows byremote control. It is particularly applicable to the windows of anautomobile, but is of course not lim- E ited to this use as itwill befound valuable Wherever it is desired to control windows from a distantpoint. i

The principal object of the invention is to provide a positive andefficient electrically operated mechanism whichwill open or close awindow in accordance to the operation of a control switch.

Another object of the invention is to so construct the device that whenthe window reaches either the fully opened or the fully closed position,it will automatically open the operating circuit.

A further object of the invention is to so construct the device thatshould the automatic cut out fail to operate, and should the operatorfail to shut off the current, the mechanism will mechanically releaseitself before damage is done to the window.

A still further object is to provide means whereby the window may bemanually operated, if desired.

Other objects and advantages reside in the detail construction of theinvention, which is designed for simplicity, economy, and efficiency.These Will become more apparent from the following description.

In the following'detailed description of the invention reference is hadto the accompanying drawings which form a part hereof. Like numeralsrefer to like parts in all views of the drawings and throughout thedescription.

In the drawings:

Fig. 1 is an inside face view of a typical automobile door with theinner wall partially broken away to show the operating mechanism'.

Fig. 2 is a vertical section taken on the line 22, Fig. 1. I

Fig. 3 is a wiring diagram illustrating a method for electricallyconnecting the various operating elements.

Fig. 4 is a detail illustration of the limit switch employed in theinvent-ion.

Fig. 5 is a detail View illustrating the meth- 0d of connecting theoperating chain to the window pane.

Fig. 6 is an enlarged vertical section through the operating gearmechanism, taken on the line 6-6, Fig. 1. 5;

Fig. 7 is a detail view illustrating the corelation between the manualcrank and the gear shaft.

In the drawings, a typical automobile door frame is illustrated at 10with its inner wall covering at 11, its hinges at 12, and its windowpane at 13.

In applying the invention, a gear frame 14 is installed within the doorframe 10, concealed by the inner wall covering 11. The 6 gear frame 14carries a hollow gear shaft 15 in suitable bearings. The gear shaft 15carries a worm wheel 16, and a chain sprocket 17 A worm 18 is in meshwith the worm Wheel 16, and is driven from a suitable electric motor 19.The electric motor 19 must be of a type to occupy a relatively narrowspace. It has been found that a motor of the type generally employed foroperating motor driven automobile horns is very satisfactorv for thispurpose. 0

A sprocket chain 20 is drilled upwardly from the chain sprocket 17 abouta chain roller 21. It will be noted that one of the reaches of the chain20 is positioned exactly along vertical center line of the window pane.The bottom of the pane is provided with a horizontal channel support 22.At the point Where the center chain reach crosses the channel support22, two stud 23 are placed which 35 tightly clamp themselves into thehollows of one of the chain links, as shown in Fig. 5.

It will be noted that from this construction, the window pane issupported at its center point so that it will balance perfectly and willnot clamp itself in the guide grooves of the frame 10.

This construction also has another advantage. Let us suppose that thepane in closing would strike an object, that would prevent it reachingthe entirely closed position. In such a case, the studs 23 would besprung apart suificiently to allow the chain to slide therebetweenwithout damage to the window pane.

Adjacent the fully closed position of the bottom edge of the pane 13, anupper limit switch 41 is placed, and adjacent the lowermost position ofthe bottom edge of the pane a lower limit switch 24 is placed. Theseswitches may be constructed in any desired manner. A preferred method ofconstructing them is illustrated in Fig. 4, in which, a switch blade 25is pivoted at 26 and is maintained normally in contact with suitablecontacts 27 through the medium of a tension spring 28. The otherextremit of the blade 25 is provided with any suita le knob or button 29which will engage the bottom flange member 22 of the window pane 13 atthe limits of its travel so as to swing the blade to the broken lineposition of Fig. 4

to open the circuit to the motor 19.

The switch for controllin the operation of the motor may be locate atany desired point. As illustrated, control switch 31 is mounted directlyupon the door at 31.

The device is preferably wired as indicated in the diagram of Fig. 3, inwhich the car battery is indicated at 30. The current from the batterymay be conducted to the mechanism in any desired manner such as througha flexible cord, or the like. A preferred method of conducting thecurrent to the door is to connect the battery leads to the door hinges12, as shown in Fig. 3. This eliminates the use of any exposed wiring.

The controlswitch 31 comprises a twopole double-throw reversing switchas indicated in the diagram No. 3. A feed conductor 32 is run from oneof the power leads to one of the center contacts to the reversing switch31. The other feed conductor, 33, is run from one of the feed contactsto one of the field terminals of the motor 19, the other field terminalbeing connected as shown at 34 to theother middle contact of thereversing switch 31. The armature leads are connected as usual to thereversing switch 31 except that the upper limit switch 23 is connectedin series with one of the armature leads, and the lower switch 24 isconnected in circuit with the other armature lead.

Let us assume that the reversing switch in the diagram is closed to theleft contacts. This causes the current to flow from the feed conductor32 through the reversing switch 31, and through the lower limit switch24; thence through the armature of the motor 19, the reversing switch31, and the motor field to the other feed conductor 33.

This causes the motor 19 to rotate so that the window pane will movedownwardly. When it reaches the lower limit of its travel, it will openthe lower limit switch 22 so as to open the circuit to stop themotor'19.

When the reversing switch 31 is thrown to the right contacts in Fig. 3,the current will flow from the feed conductor 32 through the reversingswitch 31 and the upper limit switch 41 to the motor armature. Fromthence it will flow back through the reversing switch 31, the conductor34, and the motor field to the other feed conductor 33. This reversesthe direction of rotation of the motor, and causes the window pane 13 toascend to the closed position. When fully closed, the channel member 22will contact with and open the upper limit switch 41 to again break thecircuit and stop the motor.

It is of course desirable to have means for manually operating thewindow pane in case the electrical mechanism should be out of service.This may be accomplished by means of a hand crank 35 as illustrated inFigs. 6 and.7. The shaft of the crank 35 is slotted as shown at 36 tofit over a lateral key 37 which is slidably mounted in slots 40 in thegear shaft 15, so as to project beyond the surface of the shaft. A cap39 forces a compression spring 38 against the key 37 so as to hold itnormally in the position of Fig. 6. In the latter position the key locksthe worm gear 16 and the sprocket 17 to the shaft 15. When the crank 35is inserted in the shaft 15, it will force the key 37 inwardly so thatit will disengage the worm gear 16, and allow the crank to freely rotatethe sprocket 17 so that the window pane may be manually raised orlowered.

While a specific form of the improvement has been described andillustrated herein, it is desired to be understood that the same may bevaried, within the scope of the appended claim, without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed and desired securedby Letters Patent is:

In a device for operating a window pane from a flexible chain, means forconnecting said pane to said chain comprising: a frame member secured tosaid pane; and a pair of studs projecting from said frame member intoengagement with opposite sides of said chain.

In testimony whereof, I aflix my signature.

EVERT MOSHER.

